Photochemical cyclization of some aldehyde thiosemicarbazones

Autor: Giuseppe Werber, Michelangelo Gruttadauria, Silvestre Buscemi, Giuseppe Cusmano, Renato Noto, Francesco Buccheri
Rok vydání: 1992
Předmět:
Zdroj: Journal of Heterocyclic Chemistry. 29:233-236
ISSN: 1943-5193
0022-152X
DOI: 10.1002/jhet.5570290142
Popis: The photochemical behaviour of some substituted aldehyde thiosemicarbazones 1a-k has been investigated in methanol at 254 nm. Thiosemicarbazones of glyoxil methyl ester 1a-f cyclized to furnish the 3-thioxo- 1,2,4-triazin-5-one 2 ring system. The remaining thiosemicarbazones 1g-j gave 1,2,4-triazoline 4 derivatives.
Databáze: OpenAIRE